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Conference paper2001

Self-heating and drying of wood fuel during storage

Jirjis, Raida


Comminution of woody biomass, especially freshly harvested material, followed by storage in small or large piles normally leads to a rapid heat development. How hot a chip pile can get depends on a number of biological and physical characteristics of the biomass. Chemical composition (governed by e.g. the type and the age of the material), moisture content and particle size distribution are some of these characteristics. Other factors which could affect the degree and the pattern of heat development in a pile include comminution method, dimensions of the pile, degree of compaction, covering the pile, and in certain cases ambient conditions during the building of the pile. Temperature development during chips storage affects the fuel and the surrounding environment in many ways. Elevated temperatures can lead to changes in the chemical composition of the material and moisture distribution within the pile. This in turn affects fuel quality and in extreme situation can lead to self-ignition


Forest residues; chips storage; wood fuel; self-heating; moisture content; drying

Published in

Title: Proc. of workshop "Principles and practice of forestry and bioenergy in densely-populated regions"


International workshop “Principles and practice of forestry and bioenergy in densely-populated regions

    UKÄ Subject classification

    Renewable Bioenergy Research

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